Home / 2,175.90-3,263.85-1,689.30

Finding the Fourth Proportional to 2,175.90, 3,263.85 and 1,689.30

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Solution

The fourth proportional to 2,175.90, 3,263.85 and 1,689.30 is: 2,533.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.90 : 3,263.85 = 1,689.30 : x
  2. Step 2: Convert to fraction form
    2,175.90/3,263.85 = 1,689.30/x
  3. Step 3: Cross multiply
    2,175.90x = 3,263.85 × 1,689.30
  4. Step 4: Simplify right side
    2,175.90x = 5,513,621.81
  5. Step 5: Solve for x
    x = 5,513,621.81/2,175.90
  6. Step 6: Final answer
    x = 2,533.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.